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/*
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*/
#include "qpid/framing/Endian.h"
namespace qpid {
namespace framing {
Endian::Endian() : littleEndian(!testBigEndian()) {}
bool Endian::testBigEndian()
{
uint16_t a = 1;
uint16_t b;
uint8_t* p = (uint8_t*) &b;
p[0] = 0xFF & (a >> 8);
p[1] = 0xFF & (a);
return a == b;
}
uint8_t* Endian::convertIfRequired(uint8_t* const octets, int width)
{
if (instance.littleEndian) {
for (int i = 0; i < (width/2); i++) {
uint8_t temp = octets[i];
octets[i] = octets[width - (1 + i)];
octets[width - (1 + i)] = temp;
}
}
return octets;
}
const Endian Endian::instance;
}} // namespace qpid::framing
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